4 ;;;; Data object ref/set stuff.
7 (:args (object :scs (descriptor-reg)))
8 (:info name offset lowtag)
10 (:results (result :scs (descriptor-reg any-reg)))
12 (loadw result object offset lowtag)))
14 (define-vop (set-slot)
15 (:args (object :scs (descriptor-reg))
16 (value :scs (descriptor-reg any-reg null zero)))
17 (:info name offset lowtag)
21 (storew value object offset lowtag)))
24 ;;;; Symbol hacking VOPs:
26 ;;; The compiler likes to be able to directly SET symbols.
28 (define-vop (set cell-set)
29 (:variant symbol-value-slot other-pointer-lowtag))
31 ;;; Do a cell ref with an error check for being unbound.
33 (define-vop (checked-cell-ref)
34 (:args (object :scs (descriptor-reg) :target obj-temp))
35 (:results (value :scs (descriptor-reg any-reg)))
38 (:save-p :compute-only)
39 (:temporary (:scs (non-descriptor-reg)) temp)
40 (:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp))
42 ;;; With Symbol-Value, we check that the value isn't the trap object. So
43 ;;; Symbol-Value of NIL is NIL.
45 (define-vop (symbol-value checked-cell-ref)
46 (:translate symbol-value)
48 (move obj-temp object)
49 (loadw value obj-temp symbol-value-slot other-pointer-lowtag)
50 (let ((err-lab (generate-error-code vop unbound-symbol-error obj-temp)))
51 (inst xor temp value unbound-marker-widetag)
52 (inst beq temp zero-tn err-lab)
55 ;;; Like CHECKED-CELL-REF, only we are a predicate to see if the cell is bound.
56 (define-vop (boundp-frob)
57 (:args (object :scs (descriptor-reg)))
61 (:temporary (:scs (descriptor-reg)) value)
62 (:temporary (:scs (non-descriptor-reg)) temp))
64 (define-vop (boundp boundp-frob)
67 (loadw value object symbol-value-slot other-pointer-lowtag)
68 (inst xor temp value unbound-marker-widetag)
70 (inst beq temp zero-tn target)
71 (inst bne temp zero-tn target))
74 (define-vop (fast-symbol-value cell-ref)
75 (:variant symbol-value-slot other-pointer-lowtag)
77 (:translate symbol-value))
80 ;;;; Fdefinition (fdefn) objects.
82 (define-vop (fdefn-fun cell-ref)
83 (:variant fdefn-fun-slot other-pointer-lowtag))
85 (define-vop (safe-fdefn-fun)
86 (:args (object :scs (descriptor-reg) :target obj-temp))
87 (:results (value :scs (descriptor-reg any-reg)))
89 (:save-p :compute-only)
90 (:temporary (:scs (descriptor-reg) :from (:argument 0)) obj-temp)
92 (move obj-temp object)
93 (loadw value obj-temp fdefn-fun-slot other-pointer-lowtag)
94 (let ((err-lab (generate-error-code vop undefined-fun-error obj-temp)))
95 (inst beq value null-tn err-lab))
98 (define-vop (set-fdefn-fun)
100 (:translate (setf fdefn-fun))
101 (:args (function :scs (descriptor-reg) :target result)
102 (fdefn :scs (descriptor-reg)))
103 (:temporary (:scs (interior-reg)) lip)
104 (:temporary (:scs (non-descriptor-reg)) type)
105 (:results (result :scs (descriptor-reg)))
107 (let ((normal-fn (gen-label)))
108 (load-type type function (- fun-pointer-lowtag))
110 (inst xor type simple-fun-header-widetag)
111 (inst beq type zero-tn normal-fn)
112 (inst addu lip function
113 (- (ash simple-fun-code-offset word-shift)
115 (inst li lip (make-fixup "closure_tramp" :foreign))
116 (emit-label normal-fn)
117 (storew lip fdefn fdefn-raw-addr-slot other-pointer-lowtag)
118 (storew function fdefn fdefn-fun-slot other-pointer-lowtag)
119 (move result function))))
121 (define-vop (fdefn-makunbound)
123 (:translate fdefn-makunbound)
124 (:args (fdefn :scs (descriptor-reg) :target result))
125 (:temporary (:scs (non-descriptor-reg)) temp)
126 (:results (result :scs (descriptor-reg)))
128 (storew null-tn fdefn fdefn-fun-slot other-pointer-lowtag)
129 (inst li temp (make-fixup "undefined_tramp" :foreign))
130 (storew temp fdefn fdefn-raw-addr-slot other-pointer-lowtag)
131 (move result fdefn)))
135 ;;;; Binding and Unbinding.
137 ;;; BIND -- Establish VAL as a binding for SYMBOL. Save the old value and
138 ;;; the symbol on the binding stack and stuff the new value into the
142 (:args (val :scs (any-reg descriptor-reg))
143 (symbol :scs (descriptor-reg)))
144 (:temporary (:scs (descriptor-reg)) temp)
146 (loadw temp symbol symbol-value-slot other-pointer-lowtag)
147 (inst addu bsp-tn bsp-tn (* 2 n-word-bytes))
148 (storew temp bsp-tn (- binding-value-slot binding-size))
149 (storew symbol bsp-tn (- binding-symbol-slot binding-size))
150 (storew val symbol symbol-value-slot other-pointer-lowtag)))
154 (:temporary (:scs (descriptor-reg)) symbol value)
156 (loadw symbol bsp-tn (- binding-symbol-slot binding-size))
157 (loadw value bsp-tn (- binding-value-slot binding-size))
158 (storew value symbol symbol-value-slot other-pointer-lowtag)
159 (storew zero-tn bsp-tn (- binding-symbol-slot binding-size))
160 (inst addu bsp-tn bsp-tn (* -2 n-word-bytes))))
163 (define-vop (unbind-to-here)
164 (:args (arg :scs (descriptor-reg any-reg) :target where))
165 (:temporary (:scs (any-reg) :from (:argument 0)) where)
166 (:temporary (:scs (descriptor-reg)) symbol value)
168 (let ((loop (gen-label))
172 (inst beq where bsp-tn done)
176 (loadw symbol bsp-tn (- binding-symbol-slot binding-size))
177 (inst beq symbol zero-tn skip)
178 (loadw value bsp-tn (- binding-value-slot binding-size))
179 (storew value symbol symbol-value-slot other-pointer-lowtag)
180 (storew zero-tn bsp-tn (- binding-symbol-slot binding-size))
183 (inst addu bsp-tn bsp-tn (* -2 n-word-bytes))
184 (inst bne where bsp-tn loop)
191 ;;;; Closure indexing.
193 (define-full-reffer closure-index-ref *
194 closure-info-offset fun-pointer-lowtag
195 (descriptor-reg any-reg) * %closure-index-ref)
197 (define-full-setter set-funcallable-instance-info *
198 funcallable-instance-info-offset fun-pointer-lowtag
199 (descriptor-reg any-reg null zero) * %set-funcallable-instance-info)
201 (define-full-reffer funcallable-instance-info *
202 funcallable-instance-info-offset fun-pointer-lowtag
203 (descriptor-reg any-reg) * %funcallable-instance-info)
205 (define-vop (funcallable-instance-lexenv cell-ref)
206 (:variant funcallable-instance-lexenv-slot fun-pointer-lowtag))
208 (define-vop (closure-ref slot-ref)
209 (:variant closure-info-offset fun-pointer-lowtag))
211 (define-vop (closure-init slot-set)
212 (:variant closure-info-offset fun-pointer-lowtag))
215 ;;;; Value Cell hackery.
217 (define-vop (value-cell-ref cell-ref)
218 (:variant value-cell-value-slot other-pointer-lowtag))
220 (define-vop (value-cell-set cell-set)
221 (:variant value-cell-value-slot other-pointer-lowtag))
225 ;;;; Instance hackery:
227 (define-vop (instance-length)
229 (:translate %instance-length)
230 (:args (struct :scs (descriptor-reg)))
231 (:results (res :scs (unsigned-reg)))
232 (:result-types positive-fixnum)
234 (loadw res struct 0 instance-pointer-lowtag)
235 (inst srl res n-widetag-bits)))
237 (define-vop (instance-ref slot-ref)
238 (:variant instance-slots-offset instance-pointer-lowtag)
240 (:translate %instance-ref)
241 (:arg-types instance (:constant index)))
244 (define-vop (instance-set slot-set)
246 (:translate %instance-set)
247 (:variant instance-slots-offset instance-pointer-lowtag)
248 (:arg-types instance (:constant index) *))
250 (define-full-reffer instance-index-ref * instance-slots-offset
251 instance-pointer-lowtag (descriptor-reg any-reg) * %instance-ref)
253 (define-full-setter instance-index-set * instance-slots-offset
254 instance-pointer-lowtag (descriptor-reg any-reg null zero) * %instance-set)
258 ;;;; Code object frobbing.
260 (define-full-reffer code-header-ref * 0 other-pointer-lowtag
261 (descriptor-reg any-reg) * code-header-ref)
263 (define-full-setter code-header-set * 0 other-pointer-lowtag
264 (descriptor-reg any-reg null zero) * code-header-set)